Furnace bottom roller replacing device

Abstract

The utility model relates to a furnace bottom roller replacing device which comprises a supporting track, a first moving trolley movably arranged on the supporting track and a moving track arranged on the first moving trolley, a V-shaped carrier roller is rotationally arranged at the front end of the moving track, and a second moving trolley is movably arranged on the moving track. A locking mechanism for locking the shaft head of the furnace bottom roller is arranged at the upper end of the second moving trolley, a weight box with an opening in the upper end is arranged at the rear end of the second moving trolley, and a balancing weight is placed in the weight box. The straightness of the furnace bottom roller entering the furnace can be guaranteed, and shaking in the process of entering the furnace cavity is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of bottom roll changing of a furnace, in particular to a bottom roll changing device for a furnace. Background Art

[0002] In the heat treatment production process of the metallurgical industry, a roller hearth heat treatment furnace is a relatively common device at present. During the use of the bottom roll of the furnace, phenomena such as bulging or fracture usually occur, and replacing the bottom roll is a regular item for the overhaul of the heat treatment furnace.

[0003] Currently, when replacing the bottom roll of a medium and heavy plate roller type heat treatment furnace, a crane and a counterweight are used for hoisting. The risk factor is high, the replacement process is slow, and the bottom roll sways left and right during the process of being hoisted onto the device by the crane, resulting in the bottom roll colliding with the furnace wall and being easily damaged by bumps. Content of the Utility Model

[0004] In view of the problems existing in the prior art, the utility model provides a bottom roll changing device for a furnace.

[0005] The technical solution adopted by the utility model to solve the above technical problems is: a bottom roll changing device for a furnace, including a support track, a first moving trolley movably arranged on the support track, and a moving track arranged on the first moving trolley. A V-shaped supporting roller is rotatably arranged at the front end of the moving track, a second moving trolley is movably arranged on the moving track. A locking mechanism for locking the shaft head of the bottom roll is arranged at the upper end of the second moving trolley, and a counterweight box with an open upper end is arranged at the rear end. Counterweight blocks are placed in the counterweight box.

[0006] As a preferred solution, the locking mechanism includes a locking tube, and a locking bolt for locking the shaft head of the bottom roll is arranged on the locking tube. The shaft head of the bottom roll can extend into the locking tube. There is a groove on the shaft head of the bottom roll, and the end of the locking bolt extends into the groove and abuts against the bottom of the groove to lock the shaft head of the bottom roll.

[0007] As a preferred solution, there are at least two locking bolts.

[0008] As a preferred solution, a first track wheel cooperating with the support track is arranged at the lower end of the first moving trolley.

[0009] As a preferred solution, a second track wheel cooperating with the moving track is arranged at the lower end of the second moving trolley, and a third track wheel cooperating with the moving track is arranged at the bottom of the counterweight box.

[0010] As a preferred solution, the counterweight blocks are made of iron or steel.

[0011] As a preferred solution, it further includes a guiding mechanism. The guiding mechanism includes a guiding seat which is arranged opposite to the supporting track. A lower semi-cylindrical body is provided on the guiding seat, and an upper semi-cylindrical body covering the lower semi-cylindrical body is provided on the guiding seat. The upper semi-cylindrical body and the lower semi-cylindrical body form a circular moving cavity. A guiding tube is slidably arranged in the circular moving cavity. A fixing bolt for locking the head of the bottom furnace roll is provided on the guiding tube. A groove is provided on the head of the bottom furnace roll. The end of the fixing bolt extends into the groove and abuts against the bottom of the groove to lock the head of the bottom furnace roll.

[0012] As a preferred solution, a plurality of arc-shaped plates are arranged at intervals on the upper semi-cylindrical body. Both ends of the arc-shaped plate are bent outwards to form bent portions arranged horizontally. The bent portions are connected to the guiding seat by bolts.

[0013] As a preferred solution, the V-shaped idler is an asbestos idler.

[0014] The beneficial effects of this application are as follows: 1. In this application, the head of the bottom furnace roll is locked by the locking mechanism, and the bottom furnace roll is supported by the V-shaped idler. By moving the second moving trolley and cooperating with the V-shaped idler, the bottom furnace roll can smoothly enter the furnace cavity. The straightness of the movement is ensured by the cooperation of the second moving trolley and the moving track, and the stability of the movement of the bottom furnace roll is ensured by the locking mechanism, effectively avoiding the bottom furnace roll from colliding with the furnace wall.

[0015] 2. Through the cooperation of the supporting track and the first moving trolley, the horizontal moving distance of the second moving trolley is increased, so as to be applicable to the roll change of bottom furnace rolls of different lengths.

[0016] 3. By slidably arranging a guiding tube in the circular moving cavity, one of the two heads of the bottom furnace roll extends into the guiding tube and is locked by a fixing bolt, and the other is locked by the locking mechanism. The guiding tube slides in the circular moving cavity, playing a supporting role, further ensuring the straightness of the movement and avoiding shaking during the process of entering the furnace cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present utility model;

[0018] Figure 2 is a schematic structural diagram of the locking mechanism of the present utility model;

[0019] Figure 3 is a schematic structural diagram of the guiding mechanism of the present utility model;

[0020] Figure 4 is Figure 3 a side view of

[0021] Markings in the figure: 1, support track; 2, first moving trolley; 21, first track wheel; 3, moving track; 31, V-shaped idler roller; 4, bottom roll shaft head; 41, groove; 5, second moving trolley; 51, second track wheel; 6, locking pipe; 61, locking bolt; 7, counterweight box; 71, third track wheel; 8, guide seat; 81, lower semi-cylindrical body; 9, upper semi-cylindrical body; 91, arc plate; 911, bending part; 10, guide pipe. Specific embodiments

[0022] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that in the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0023] Please refer to Figures 1-4 , an embodiment of the present utility model provides a bottom roll roll-changing device, which includes a support track 1, a first moving trolley 2 movably arranged on the support track 1, and a moving track 3 arranged on the first moving trolley 2. A V-shaped idler roller 31 is rotatably arranged at the front end of the moving track 3. A second moving trolley 5 is movably arranged on the moving track 3. A locking mechanism for locking the bottom roll shaft head 4 is arranged at the upper end of the second moving trolley 5, and a counterweight box 7 with an open upper end is arranged at the rear end. Counterweight blocks are placed in the counterweight box 7.

[0024] Combined with Figure 1 and Figure 2 As shown, the locking mechanism includes a locking pipe 6. A locking bolt 61 for locking the bottom roll shaft head 4 is arranged on the locking pipe 6. The bottom roll shaft head 4 can extend into the locking pipe 6. There is a groove 41 on the bottom roll shaft head 4. The end of the locking bolt 61 extends into the groove 41 and the end abuts against the bottom of the groove 41 to lock the bottom roll shaft head 4. There are at least two locking bolts 61.

[0025] Among them, a first track wheel 21 adapted to the support track 1 is provided at the lower end of the first moving trolley 2, a second track wheel 51 adapted to the moving track 3 is provided at the lower end of the second moving trolley 5, and a third track wheel 71 adapted to the moving track 3 is provided at the bottom of the counterweight box 7. The first track wheel 21, the second track wheel 51 and the third track wheel 71 are all track wheels commonly used in the prior art. The counterweight block is an iron or steel block. It should be noted that the parts not described in detail in this application are all prior art.

[0026] Specifically, it further includes a guiding mechanism. The guiding mechanism includes a guiding seat 8. The guiding seat 8 is arranged opposite to the support track 1. A lower semi-cylindrical body 81 is provided on the guiding seat 8. An upper semi-cylindrical body 9 covering the lower semi-cylindrical body 81 is provided on the guiding seat 8. The upper semi-cylindrical body 9 and the lower semi-cylindrical body 81 form a circular moving cavity. The upper semi-cylindrical body 9 and the lower semi-cylindrical body 81 form a circular cylinder. Both ends of the circular cylinder are open. A guiding tube 10 is slidably arranged in the circular moving cavity. A fixing bolt for locking the hearth roller shaft head 4 is provided on the guiding tube 10. A groove 41 is provided on the hearth roller shaft head 4. The end of the fixing bolt extends into the groove 41 and the end abuts against the bottom of the groove 41 to lock the hearth roller shaft head 4.

[0027] In addition, a plurality of arc plates 91 are arranged at intervals on the upper semi-cylindrical body 9. The arc plates 91 are welded to the upper semi-cylindrical body 9. Both ends of the arc plates 91 are bent outward to form horizontally arranged bending parts 911. The arc plates 91 and the bending parts 911 are integrally formed. The bending parts 911 are connected to the guiding seat 8 by bolts. For the two hearth roller shaft heads 4 of the hearth roller, one extends into the guiding tube 10 and is locked by a fixing bolt, and the other is locked by a locking mechanism. The guiding tube 10 slides horizontally in the circular moving cavity, playing a supporting role, further ensuring the straightness of the movement and avoiding shaking during the process of entering the furnace cavity.

[0028] It should be noted in this application that installation through holes for installing hearth rollers are provided on both sides of the roller hearth heat treatment furnace. When this application is used, the support track 1 and the guiding mechanism are installed on both sides of the roller hearth heat treatment furnace. The hearth roller is placed on the V-shaped supporting roller 31. One of the hearth roller shaft heads 4 of the hearth roller is extended into the locking tube 6 and locked by a locking bolt 61. Then, the guiding tube 10 is passed through two coaxial installation through holes and the other hearth roller shaft head 4 of the hearth roller is extended into the guiding tube 10, and then locked by a fixing bolt. The guiding tube 10 is always located in the circular moving cavity. Subsequently, the second moving trolley 5 is pushed to move the second moving trolley 5 close to the roller hearth heat treatment furnace, and the hearth roller is fed into the furnace. After being completely fed, the fixing bolt and the locking bolt 61 are loosened, and then the locking tube 6 and the guiding tube 10 are withdrawn. When the hearth roller is sent out of the furnace, after the two hearth roller shaft heads 4 are respectively locked by the fixing bolt and the locking bolt 61, the second moving trolley 5 is pushed to move the second moving trolley 5 away from the roller hearth heat treatment furnace, and the hearth roller can be sent out of the furnace.

[0029] Certainly, the present utility model is not limited to the above-described embodiments, and several other embodiments based on the design concept of the present utility model are provided below.

[0030] For example, in other embodiments, different from the above-described embodiments, the V-shaped idler 31 is an asbestos idler.

[0031] It should be noted that the above embodiments are only used to illustrate the present utility model, but the present utility model is not limited to the above embodiments. Any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A furnace bottom roller changing device, characterized in that: The invention comprises a support rail (1), a first movable trolley (2) movably arranged on the support rail (1), and a movable rail (3) arranged on the first movable trolley (2); a V-shaped roller (31) is rotatably arranged at the front end of the movable rail (3); a second movable trolley (5) is movably arranged on the movable rail (3); a locking mechanism for locking a furnace bottom roller shaft head (4) is arranged at the upper end of the second movable trolley (5); and a counterweight box (7) with an upper end opening is arranged at the rear end; a counterweight block is placed in the counterweight box (7).

2. A furnace bottom roller changing device according to claim 1, characterized in that: The locking mechanism comprises a locking tube (6), the locking tube (6) being provided with a locking bolt (61) for locking the furnace bottom roller shaft head (4), the furnace bottom roller shaft head (4) being able to extend into the locking tube (6), the furnace bottom roller shaft head (4) being provided with a groove (41), the end of the locking bolt (61) extending into the groove (41) and the end abutting against the bottom of the groove (41) to achieve locking of the furnace bottom roller shaft head (4).

3. A furnace bottom roller changing device according to claim 2, characterized in that: There are at least two locking bolts (61).

4. The furnace bottom roller changing device according to claim 1, characterized in that: The lower end of the first moving trolley (2) is provided with a first rail wheel (21) that cooperates with the supporting rail (1).

5. The furnace bottom roller changing device according to claim 1, characterized in that: The lower end of the second moving trolley (5) is provided with a second rail wheel (51) that cooperates with the moving rail (3), and the bottom of the counterweight box (7) is provided with a third rail wheel (71) that cooperates with the moving rail (3).

6. The furnace bottom roller changing device according to claim 1, characterized in that: The counterweight block is an iron or steel block.

7. The furnace bottom roller changing device according to claim 1, characterized in that: The guide mechanism also includes a guide seat (8), the guide seat (8) is arranged relative to the support rail (1), a lower semicircular cylinder (81) is provided on the guide seat (8), an upper semicircular cylinder (9) is provided on the guide seat (8) and is covered on the lower semicircular cylinder (81), the upper semicircular cylinder (9) and the lower semicircular cylinder (81) form a circular movable cavity, a guide tube (10) is slidably arranged in the circular movable cavity, a fixing bolt for locking the furnace bottom roller shaft head (4) is provided on the guide tube (10), a groove (41) is provided on the furnace bottom roller shaft head (4), an end of the fixing bolt extends into the groove (41) and the end abuts against the bottom of the groove (41) to achieve locking of the furnace bottom roller shaft head (4).

8. The furnace bottom roller changing device according to claim 7, characterized in that: A plurality of arc-shaped plates (91) are arranged at intervals on the upper semicircular cylinder (9); both ends of the arc-shaped plates (91) are bent outwards to form horizontally arranged bending portions (911); and the bending portions (911) are connected to the guide seat (8) by bolts.

9. The furnace bottom roller changing device according to claim 1, characterized in that: The V-shaped roller (31) is an asbestos roller.

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